21322302 has 16 divisors (see below), whose sum is σ = 43552512. Its totient is φ = 6956120.

The previous prime is 21322297. The next prime is 21322307. The reversal of 21322302 is 20322312.

It is an interprime number because it is at equal distance from previous prime (21322297) and next prime (21322307).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37524 + ... + 38087.

It is an arithmetic number, because the mean of its divisors is an integer number (2722032).

Almost surely, 2^21322302 is an apocalyptic number.

21322302 is an abundant number, since it is smaller than the sum of its proper divisors (22230210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21322302 is a wasteful number, since it uses less digits than its factorization.

21322302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75663.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 21322302 is about 4617.6078222387. The cubic root of 21322302 is about 277.2966971272.

Adding to 21322302 its reverse (20322312), we get a palindrome (41644614).

The spelling of 21322302 in words is "twenty-one million, three hundred twenty-two thousand, three hundred two".